diff --git a/tests/functional/fetchGit.sh b/tests/functional/fetchGit.sh
index 2056117ce..6c86b20aa 100755
--- a/tests/functional/fetchGit.sh
+++ b/tests/functional/fetchGit.sh
@@ -64,7 +64,7 @@ git -C $repo add differentbranch
 git -C $repo commit -m 'Test2'
 git -C $repo checkout master
 devrev=$(git -C $repo rev-parse devtest)
-nix eval --impure --raw --expr "builtins.fetchGit { url = file://$repo; rev = \"$devrev\"; }"
+nix eval --raw --expr "builtins.fetchGit { url = file://$repo; rev = \"$devrev\"; }"
 
 [[ $(nix eval --raw --expr "builtins.readFile (builtins.fetchGit { url = file://$repo; rev = \"$devrev\"; allRefs = true; } + \"/differentbranch\")") = 'different file' ]]
 
@@ -142,10 +142,10 @@ path4=$(nix eval --impure --refresh --raw --expr "(builtins.fetchGit file://$rep
 [[ $(nix eval --impure --expr "builtins.hasAttr \"dirtyShortRev\" (builtins.fetchGit $repo)") == "false" ]]
 
 status=0
-nix eval --impure --raw --expr "(builtins.fetchGit { url = $repo; rev = \"$rev2\"; narHash = \"sha256-B5yIPHhEm0eysJKEsO7nqxprh9vcblFxpJG11gXJus1=\"; }).outPath" || status=$?
+nix eval --raw --expr "(builtins.fetchGit { url = $repo; rev = \"$rev2\"; narHash = \"sha256-B5yIPHhEm0eysJKEsO7nqxprh9vcblFxpJG11gXJus1=\"; }).outPath" || status=$?
 [[ "$status" = "102" ]]
 
-path5=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = $repo; rev = \"$rev2\"; narHash = \"sha256-Hr8g6AqANb3xqX28eu1XnjK/3ab8Gv6TJSnkb1LezG9=\"; }).outPath")
+path5=$(nix eval --raw --expr "(builtins.fetchGit { url = $repo; rev = \"$rev2\"; narHash = \"sha256-Hr8g6AqANb3xqX28eu1XnjK/3ab8Gv6TJSnkb1LezG9=\"; }).outPath")
 [[ $path = $path5 ]]
 
 # tarball-ttl should be ignored if we specify a rev
@@ -255,7 +255,7 @@ echo "/exported-wonky export-ignore=wonk" >> $repo/.gitattributes
 git -C $repo add not-exported-file exported-wonky .gitattributes
 git -C $repo commit -m 'Bla6'
 rev5=$(git -C $repo rev-parse HEAD)
-path12=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = file://$repo; rev = \"$rev5\"; }).outPath")
+path12=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$repo; rev = \"$rev5\"; }).outPath")
 [[ ! -e $path12/not-exported-file ]]
 [[ -e $path12/exported-wonky ]]